답안 #211478

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
211478	2020-03-20T13:18:07 Z	popovicirobert	Mountains (NOI20_mountains)	C++14	100 / 100	117 ms	11896 KB

Mountains

#include <bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define lsb(x) (x & (-x))

using namespace std;

struct Fenwick {
    vector <int> aib;
    int n;
    Fenwick(int _n = 0) {
        n = _n;
        aib.resize(n + 1);
    }
    inline void init(int _n) {
        n = _n;
        aib.resize(n + 1);
    }
    inline void update(int pos, int val) {
        for(int i = pos; i <= n; i += lsb(i)) {
            aib[i] += val;
        }
    }
    inline int query(int pos) {
        int ans = 0;
        for(int i = pos; i > 0; i -= lsb(i)) {
            ans += aib[i];
        }
        return ans;
    }
    inline int sum(int l, int r) {
        return query(r) - query(l - 1);
    }
};

int main() {
#ifdef HOME
	ifstream cin("C.in");
	ofstream cout("C.out");
#endif
	int i, n;
	ios::sync_with_stdio(false);
	cin.tie(0), cout.tie(0);

	cin >> n;
	vector<pair<ll, int>> h(n);
	for(i = 0; i < n; i++) {
		cin >> h[i].first;
		h[i].second = i + 1;
	}
	sort(h.begin(), h.end());
	Fenwick fen(n);
	ll ans = 0;
	i = 0;
	while(i < n) {
		int j = i;
		while(j < n && h[i].first == h[j].first) {
			int cur = fen.query(h[j].second);
			ans += 1LL * (i - cur) * cur;
			j++;
		}
		while(i < j) {
			fen.update(h[i].second, 1);
			i++;
		}
	}
	cout << ans;

	return 0;
}

Subtask #1
2.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	384 KB	Output is correct
2	Correct	89 ms	11896 KB	Output is correct
3	Correct	86 ms	11768 KB	Output is correct
4	Correct	97 ms	11768 KB	Output is correct
5	Correct	87 ms	11768 KB	Output is correct
6	Correct	93 ms	11768 KB	Output is correct
7	Correct	84 ms	11768 KB	Output is correct
8	Correct	85 ms	11768 KB	Output is correct
9	Correct	92 ms	11784 KB	Output is correct
10	Correct	95 ms	11768 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	6776 KB	Output is correct
2	Correct	68 ms	6776 KB	Output is correct
3	Correct	63 ms	6776 KB	Output is correct
4	Correct	61 ms	6776 KB	Output is correct
5	Correct	63 ms	6752 KB	Output is correct
6	Correct	63 ms	6904 KB	Output is correct
7	Correct	60 ms	6776 KB	Output is correct
8	Correct	39 ms	6776 KB	Output is correct
9	Correct	42 ms	6776 KB	Output is correct
10	Correct	4 ms	384 KB	Output is correct

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	6776 KB	Output is correct
2	Correct	68 ms	6776 KB	Output is correct
3	Correct	63 ms	6776 KB	Output is correct
4	Correct	61 ms	6776 KB	Output is correct
5	Correct	63 ms	6752 KB	Output is correct
6	Correct	63 ms	6904 KB	Output is correct
7	Correct	60 ms	6776 KB	Output is correct
8	Correct	39 ms	6776 KB	Output is correct
9	Correct	42 ms	6776 KB	Output is correct
10	Correct	4 ms	384 KB	Output is correct
11	Correct	72 ms	7032 KB	Output is correct
12	Correct	71 ms	7032 KB	Output is correct
13	Correct	72 ms	7036 KB	Output is correct
14	Correct	71 ms	7032 KB	Output is correct
15	Correct	71 ms	7032 KB	Output is correct
16	Correct	71 ms	7032 KB	Output is correct
17	Correct	74 ms	7032 KB	Output is correct
18	Correct	45 ms	7120 KB	Output is correct
19	Correct	49 ms	7032 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	4 ms	384 KB	Output is correct

Subtask #5
28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	4 ms	384 KB	Output is correct
11	Correct	8 ms	768 KB	Output is correct
12	Correct	8 ms	768 KB	Output is correct
13	Correct	8 ms	768 KB	Output is correct
14	Correct	8 ms	768 KB	Output is correct
15	Correct	8 ms	768 KB	Output is correct
16	Correct	8 ms	768 KB	Output is correct
17	Correct	8 ms	768 KB	Output is correct
18	Correct	8 ms	768 KB	Output is correct
19	Correct	7 ms	640 KB	Output is correct
20	Correct	4 ms	384 KB	Output is correct

Subtask #6
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	6776 KB	Output is correct
2	Correct	68 ms	6776 KB	Output is correct
3	Correct	63 ms	6776 KB	Output is correct
4	Correct	61 ms	6776 KB	Output is correct
5	Correct	63 ms	6752 KB	Output is correct
6	Correct	63 ms	6904 KB	Output is correct
7	Correct	60 ms	6776 KB	Output is correct
8	Correct	39 ms	6776 KB	Output is correct
9	Correct	42 ms	6776 KB	Output is correct
10	Correct	4 ms	384 KB	Output is correct
11	Correct	72 ms	7032 KB	Output is correct
12	Correct	71 ms	7032 KB	Output is correct
13	Correct	72 ms	7036 KB	Output is correct
14	Correct	71 ms	7032 KB	Output is correct
15	Correct	71 ms	7032 KB	Output is correct
16	Correct	71 ms	7032 KB	Output is correct
17	Correct	74 ms	7032 KB	Output is correct
18	Correct	45 ms	7120 KB	Output is correct
19	Correct	49 ms	7032 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	83 ms	7928 KB	Output is correct
22	Correct	83 ms	7928 KB	Output is correct
23	Correct	86 ms	7928 KB	Output is correct
24	Correct	85 ms	7932 KB	Output is correct
25	Correct	84 ms	7928 KB	Output is correct
26	Correct	84 ms	7948 KB	Output is correct
27	Correct	84 ms	7928 KB	Output is correct
28	Correct	60 ms	7928 KB	Output is correct
29	Correct	58 ms	7928 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct

Subtask #7
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	384 KB	Output is correct
2	Correct	89 ms	11896 KB	Output is correct
3	Correct	86 ms	11768 KB	Output is correct
4	Correct	97 ms	11768 KB	Output is correct
5	Correct	87 ms	11768 KB	Output is correct
6	Correct	93 ms	11768 KB	Output is correct
7	Correct	84 ms	11768 KB	Output is correct
8	Correct	85 ms	11768 KB	Output is correct
9	Correct	92 ms	11784 KB	Output is correct
10	Correct	95 ms	11768 KB	Output is correct
11	Correct	59 ms	6776 KB	Output is correct
12	Correct	68 ms	6776 KB	Output is correct
13	Correct	63 ms	6776 KB	Output is correct
14	Correct	61 ms	6776 KB	Output is correct
15	Correct	63 ms	6752 KB	Output is correct
16	Correct	63 ms	6904 KB	Output is correct
17	Correct	60 ms	6776 KB	Output is correct
18	Correct	39 ms	6776 KB	Output is correct
19	Correct	42 ms	6776 KB	Output is correct
20	Correct	4 ms	384 KB	Output is correct
21	Correct	72 ms	7032 KB	Output is correct
22	Correct	71 ms	7032 KB	Output is correct
23	Correct	72 ms	7036 KB	Output is correct
24	Correct	71 ms	7032 KB	Output is correct
25	Correct	71 ms	7032 KB	Output is correct
26	Correct	71 ms	7032 KB	Output is correct
27	Correct	74 ms	7032 KB	Output is correct
28	Correct	45 ms	7120 KB	Output is correct
29	Correct	49 ms	7032 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	5 ms	384 KB	Output is correct
32	Correct	5 ms	384 KB	Output is correct
33	Correct	5 ms	384 KB	Output is correct
34	Correct	5 ms	384 KB	Output is correct
35	Correct	5 ms	384 KB	Output is correct
36	Correct	5 ms	384 KB	Output is correct
37	Correct	5 ms	384 KB	Output is correct
38	Correct	5 ms	384 KB	Output is correct
39	Correct	5 ms	384 KB	Output is correct
40	Correct	4 ms	384 KB	Output is correct
41	Correct	8 ms	768 KB	Output is correct
42	Correct	8 ms	768 KB	Output is correct
43	Correct	8 ms	768 KB	Output is correct
44	Correct	8 ms	768 KB	Output is correct
45	Correct	8 ms	768 KB	Output is correct
46	Correct	8 ms	768 KB	Output is correct
47	Correct	8 ms	768 KB	Output is correct
48	Correct	8 ms	768 KB	Output is correct
49	Correct	7 ms	640 KB	Output is correct
50	Correct	4 ms	384 KB	Output is correct
51	Correct	83 ms	7928 KB	Output is correct
52	Correct	83 ms	7928 KB	Output is correct
53	Correct	86 ms	7928 KB	Output is correct
54	Correct	85 ms	7932 KB	Output is correct
55	Correct	84 ms	7928 KB	Output is correct
56	Correct	84 ms	7948 KB	Output is correct
57	Correct	84 ms	7928 KB	Output is correct
58	Correct	60 ms	7928 KB	Output is correct
59	Correct	58 ms	7928 KB	Output is correct
60	Correct	5 ms	384 KB	Output is correct
61	Correct	111 ms	11768 KB	Output is correct
62	Correct	112 ms	11768 KB	Output is correct
63	Correct	116 ms	11768 KB	Output is correct
64	Correct	110 ms	11768 KB	Output is correct
65	Correct	110 ms	11768 KB	Output is correct
66	Correct	117 ms	11768 KB	Output is correct
67	Correct	112 ms	11768 KB	Output is correct
68	Correct	114 ms	11768 KB	Output is correct
69	Correct	92 ms	8056 KB	Output is correct
70	Correct	5 ms	384 KB	Output is correct

답안 #211478

Compilation message

Subtask #1 2.0 / 2.0

Subtask #2 4.0 / 4.0

Subtask #3 9.0 / 9.0

Subtask #4 36.0 / 36.0

Subtask #5 28.0 / 28.0

Subtask #6 9.0 / 9.0

Subtask #7 12.0 / 12.0

Subtask #1
2.0 / 2.0

Subtask #2
4.0 / 4.0

Subtask #3
9.0 / 9.0

Subtask #4
36.0 / 36.0

Subtask #5
28.0 / 28.0

Subtask #6
9.0 / 9.0

Subtask #7
12.0 / 12.0